The discovery changed the view of scientists about the formation of the Solar system.
Scientists have found the dwarf planet 2007 OR10 a small moon with a diameter of 250-350 km. This was reported in an article published in the Astrophysical Journal Letters.
The discovery changed the view of scientists about the formation of the Solar system, because the existence of a moon, says that during the time of the birth of these celestial bodies, the collision between the “germ” of the planets have been more widespread than previously thought.
Planetoid 2007 OR10 was discovered in 2007 and until last year scientists could not explain the unusual red colour of its surface.
It turned out that she weighs much more than considered a resident – at the mass, it occupies third place among the dwarf planets of the Solar system after Pluto and Eris.
2007 OR10 is painted red for the same reasons that the Pluto – its surface is covered with “snow” of aromatic hydrocarbons resulting from decomposition of ethane and methane under the action of the rays of the Sun.
This dwarf planet has another interesting feature – one turn around the axis it makes about 45 hours instead of 20-24 hours, like other Kuiper belt objects.
Low rotation speed, the scientists explained that she has a satellite, the gravitational interaction which caused the planet to spin more slowly.
Voorujenii this idea, planetary scientists have studied photos of the object, made by Hubble, and found the moon in the photographs taken in 2009 and 2010.
As the moon of Pluto, Makemake and Eris, 2007 OR10 companion, currently unnamed, has a fairly impressive size in comparison with its “big sister” – its diameter is about 250-350 kilometers, which is only 5-6 times smaller than the diameter of the dwarf planet itself.
The calculations of scientists show that it completes one revolution around 2007 OR10 for about 35 or 100 days, and probably always “looks” on the surface of the dwarf planet on one side, as earth’s Moon.
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